21269283

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{3529}}^1$

素因数の和:3587

約数の個数: 24

約数和(自身を含む): 33803280

約数和(自身を除く): 12533997

約数列:

[1, 3, 7, 21, 41, 49, 123, 147, 287, 861, 2009, 3529, 6027, 10587, 24703, 74109, 144689, 172921, 434067, 518763, 1012823, 3038469, 7089761, 21269283]

約数ペア:

[(1, 21269283), (3, 7089761), (7, 3038469), (21, 1012823), (41, 518763), (49, 434067), (123, 172921), (147, 144689), (287, 74109), (861, 24703), (2009, 10587), (3529, 6027)]